期刊
出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0168-9002(02)00337-6
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An electron-gun based on a ferroelectric cathode is studied in a free-electron maser (FEM) experiment. In this gun, the electrons are separated from the cathode surface plasma, and are accelerated in two stages. The electron energy-spread is reduced sufficiently for an FEM operation in the microwave regime. A 14 keV, 1-2 A e-beam is obtained in a 0.1-2.1 mus pulse width. The pulse repetition frequency attains 3.1 MHz in similar to50% duty-cycle. This gun is implemented in an FEM oscillator experiment operating around 3 GHz. The paper presents experimental results and discusses the applicability of ferroelectric guns in free-electron laser devices. (C) 2002 Elsevier Science B.V. All rights reserved.
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